java.io
Class PrintStream

A PrintStream adds functionality to another output stream,
namely the ability to print representations of various data values
conveniently. Two other features are provided as well. Unlike other output
streams, a PrintStream never throws an
IOException; instead, exceptional situations merely set an
internal flag that can be tested via the checkError method.
Optionally, a PrintStream can be created so as to flush
automatically; this means that the flush method is
automatically invoked after a byte array is written, one of the
println methods is invoked, or a newline character or byte
('\n') is written.

All characters printed by a PrintStream are converted into
bytes using the platform's default character encoding. The PrintWriter class should be used in situations that require writing
characters rather than bytes.

close

checkError

public boolean checkError()

Flush the stream and check its error state. The internal error state
is set to true when the underlying output stream throws an
IOException other than InterruptedIOException,
and when the setError method is invoked. If an operation
on the underlying output stream throws an
InterruptedIOException, then the PrintStream
converts the exception back into an interrupt by doing:

Thread.currentThread().interrupt();

or the equivalent.

Returns:

True if and only if this stream has encountered an
IOException other than
InterruptedIOException, or the
setError method has been invoked

setError

protected void setError()

Set the error state of the stream to true.

Since:

JDK1.1

write

public void write(int b)

Write the specified byte to this stream. If the byte is a newline and
automatic flushing is enabled then the flush method will be
invoked.

Note that the byte is written as given; to write a character that
will be translated according to the platform's default character
encoding, use the print(char) or println(char)
methods.

print

public void print(boolean b)

Print a boolean value. The string produced by String.valueOf(boolean) is translated into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

Parameters:

b - The boolean to be printed

print

public void print(char c)

Print a character. The character is translated into one or more bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

Parameters:

c - The char to be printed

print

public void print(int i)

Print an integer. The string produced by String.valueOf(int) is translated into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

print

public void print(long l)

Print a long integer. The string produced by String.valueOf(long) is translated into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

print

public void print(float f)

Print a floating-point number. The string produced by String.valueOf(float) is translated into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

print

public void print(double d)

Print a double-precision floating-point number. The string produced by
String.valueOf(double) is translated into
bytes according to the platform's default character encoding, and these
bytes are written in exactly the manner of the write(int) method.

print

public void print(char[] s)

Print an array of characters. The characters are converted into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

print

Print a string. If the argument is null then the string
"null" is printed. Otherwise, the string's characters are
converted into bytes according to the platform's default character
encoding, and these bytes are written in exactly the manner of the
write(int) method.

Parameters:

s - The String to be printed

print

Print an object. The string produced by the String.valueOf(Object) method is translated into bytes
according to the platform's default character encoding, and these bytes
are written in exactly the manner of the
write(int) method.

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